It's very difficult for me to express my understanding of this without appearing to infer criticism of some dogma and thus infringing site rules, and it's one I've thought long and hard about previously on this topic and deliberately refrained from. I'll try very hard not to infringe
But rather than reflect on what the edicts of different denominations may say, for me it has come to come down (ouch!) to what the Eucharist means for me personally, and to my relationship with Christ, so bear with me, and I'll leave it this time to the Moderators to decide whether or not to delete.
It has to do with the teaching that the church (i.e. the body of believers) is the Bride of Christ. I have been taught that in Christ's time, if a young man wished to marry, he would first discuss the matter with the father of the intended. Things would then proceed to a meal, at which the young man would take a glass of wine, sip from it, and then pass it to his intended. She was free to either drink from it or refuse. If she drank from it, it was a sign of acceptance, and the intended relationship was consecrated. After this, he would return to his father's house and prepare a place for her, then come back to take her there.
Hence the imagery at the Last Supper, where the disciples were effectively asked to join Christ's church in a consecrated "bridal" relationship. In this sense the "I am going to prepare a place for you…I will come back and take you to myself.." implies an immediate relationship more so than an eschatological one.
As an Anglican, I have never been in a situation where I was refused Communion in another church. It would disturb me deeply if this happened as for me it would signify a rejection from Christ's church, i.e. I was not welcome or wanted. In such a case I could never regard a proffered blessing offered in lieu as valid. Likewise, if I refrained from taking Communion I would, in myself, have to wrestle with whether or not I was rejecting an offer to be a part of Christ's family.
These are personal views but result from a lot of thought and to me have more meaning than any particular denominational dogma on the matter which might give me misgivings.
So let's see how it goes with the Moderators.
De Colores
Bogong